package com.bootdo.common.utils;

import java.io.IOException;
import java.net.SocketTimeoutException;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.config.RequestConfig.Builder;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
public class HttpClientUtils {
	 public static final int connTimeout=10000;
	    public static final int readTimeout=10000;
	    public static final String charset="UTF-8";
	    private static HttpClient client = null;

	    static {
	        PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
	        cm.setMaxTotal(128);
	        cm.setDefaultMaxPerRoute(128);
	        client = HttpClients.custom().setConnectionManager(cm).build();
	    }

	    public static String postParameters(String url, String parameterStr) throws ConnectTimeoutException, SocketTimeoutException, Exception{
	        return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
	    }

	    public static String postParameters(String url, String parameterStr,String charset, Integer connTimeout, Integer readTimeout) throws ConnectTimeoutException, SocketTimeoutException, Exception{
	        return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
	    }

	    public static String postParameters(String url, Map<String, String> params) throws ConnectTimeoutException,
	            SocketTimeoutException, Exception {
	        return postForm(url, params, null, connTimeout, readTimeout);
	    }

	    public static String postParameters(String url, Map<String, String> params, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
	            SocketTimeoutException, Exception {
	        return postForm(url, params, null, connTimeout, readTimeout);
	    }

	    public static String get(String url) throws Exception {
	        return get(url, charset, null, null);
	    }

	    public static String get(String url, String charset) throws Exception {
	        return get(url, charset, connTimeout, readTimeout);
	    }

	    /**
	     * 发送一个 Post 请求, 使用指定的字符集编码.
	     *
	     * @param url
	     * @param body RequestBody
	     * @param mimeType 例如 application/xml "application/x-www-form-urlencoded" a=1&b=2&c=3
	     * @param charset 编码
	     * @param connTimeout 建立链接超时时间,毫秒.
	     * @param readTimeout 响应超时时间,毫秒.
	     * @return ResponseBody, 使用指定的字符集编码.
	     * @throws ConnectTimeoutException 建立链接超时异常
	     * @throws SocketTimeoutException  响应超时
	     * @throws Exception
	     */
	    public static String post(String url, String body, String mimeType,String charset, Integer connTimeout, Integer readTimeout)
	            throws ConnectTimeoutException, SocketTimeoutException, Exception {
	        HttpClient client = null;
	        HttpPost post = new HttpPost(url);
	        String result = "";
	        try {
	            if (StringUtils.isNotBlank(body)) {
	                HttpEntity entity = new StringEntity(body, ContentType.create(mimeType, charset));
	                post.setEntity(entity);
	            }
	            // 设置参数
	            Builder customReqConf = RequestConfig.custom();
	            if (connTimeout != null) {
	                customReqConf.setConnectTimeout(connTimeout);
	            }
	            if (readTimeout != null) {
	                customReqConf.setSocketTimeout(readTimeout);
	            }
	            post.setConfig(customReqConf.build());

	            HttpResponse res;
	            if (url.startsWith("https")) {
	                // 执行 Https 请求.
	                client = createSSLInsecureClient();
	                res = client.execute(post);
	            } else {
	                // 执行 Http 请求.
	                client = HttpClientUtils.client;
	                res = client.execute(post);
	            }
	            result = IOUtils.toString(res.getEntity().getContent(), charset);
	        } finally {
	            post.releaseConnection();
	            if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {
	                ((CloseableHttpClient) client).close();
	            }
	        }
	        return result;
	    }


	    /**
	     * 提交form表单
	     *
	     * @param url
	     * @param params
	     * @param connTimeout
	     * @param readTimeout
	     * @return
	     * @throws ConnectTimeoutException
	     * @throws SocketTimeoutException
	     * @throws Exception
	     */
	    public static String postForm(String url, Map<String, String> params, Map<String, String> headers, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
	            SocketTimeoutException, Exception {

	        HttpClient client = null;
	        HttpPost post = new HttpPost(url);
	        try {
	            if (params != null && !params.isEmpty()) {
	                List<NameValuePair> formParams = new ArrayList<org.apache.http.NameValuePair>();
	                Set<Entry<String, String>> entrySet = params.entrySet();
	                for (Entry<String, String> entry : entrySet) {
	                    formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
	                }
	                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);
	                post.setEntity(entity);
	            }

	            if (headers != null && !headers.isEmpty()) {
	                for (Entry<String, String> entry : headers.entrySet()) {
	                    post.addHeader(entry.getKey(), entry.getValue());
	                }
	            }
	            // 设置参数
	            Builder customReqConf = RequestConfig.custom();
	            if (connTimeout != null) {
	                customReqConf.setConnectTimeout(connTimeout);
	            }
	            if (readTimeout != null) {
	                customReqConf.setSocketTimeout(readTimeout);
	            }
	            post.setConfig(customReqConf.build());
	            HttpResponse res = null;
	            if (url.startsWith("https")) {
	                // 执行 Https 请求.
	                client = createSSLInsecureClient();
	                res = client.execute(post);
	            } else {
	                // 执行 Http 请求.
	                client = HttpClientUtils.client;
	                res = client.execute(post);
	            }
	            return IOUtils.toString(res.getEntity().getContent(), "UTF-8");
	        } finally {
	            post.releaseConnection();
	            if (url.startsWith("https") && client != null
	                    && client instanceof CloseableHttpClient) {
	                ((CloseableHttpClient) client).close();
	            }
	        }
	    }




	    /**
	     * 发送一个 GET 请求
	     *
	     * @param url
	     * @param charset
	     * @param connTimeout  建立链接超时时间,毫秒.
	     * @param readTimeout  响应超时时间,毫秒.
	     * @return
	     * @throws ConnectTimeoutException   建立链接超时
	     * @throws SocketTimeoutException   响应超时
	     * @throws Exception
	     */
	    public static String get(String url, String charset, Integer connTimeout,Integer readTimeout)
	            throws ConnectTimeoutException,SocketTimeoutException, Exception {

	        HttpClient client = null;
	        HttpGet get = new HttpGet(url);
	        String result = "";
	        try {
	            // 设置参数
	            Builder customReqConf = RequestConfig.custom();
	            if (connTimeout != null) {
	                customReqConf.setConnectTimeout(connTimeout);
	            }
	            if (readTimeout != null) {
	                customReqConf.setSocketTimeout(readTimeout);
	            }
	            get.setConfig(customReqConf.build());

	            HttpResponse res = null;

	            if (url.startsWith("https")) {
	                // 执行 Https 请求.
	                client = createSSLInsecureClient();
	                res = client.execute(get);
	            } else {
	                // 执行 Http 请求.
	                client = HttpClientUtils.client;
	                res = client.execute(get);
	            }

	            result = IOUtils.toString(res.getEntity().getContent(), charset);
	        } finally {
	            get.releaseConnection();
	            if (url.startsWith("https") && client != null && client instanceof CloseableHttpClient) {
	                ((CloseableHttpClient) client).close();
	            }
	        }
	        return result;
	    }


	    /**
	     * 从 response 里获取 charset
	     *
	     * @param ressponse
	     * @return
	     */
	    @SuppressWarnings("unused")
	    private static String getCharsetFromResponse(HttpResponse ressponse) {
	        // Content-Type:text/html; charset=GBK
	        if (ressponse.getEntity() != null  && ressponse.getEntity().getContentType() != null && ressponse.getEntity().getContentType().getValue() != null) {
	            String contentType = ressponse.getEntity().getContentType().getValue();
	            if (contentType.contains("charset=")) {
	                return contentType.substring(contentType.indexOf("charset=") + 8);
	            }
	        }
	        return null;
	    }



	    /**
	     * 创建 SSL连接
	     * @return
	     * @throws GeneralSecurityException
	     */
	    private static CloseableHttpClient createSSLInsecureClient() throws GeneralSecurityException {
	        try {
	            SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
	                public boolean isTrusted(X509Certificate[] chain,String authType) throws CertificateException {
	                    return true;
	                }
	            }).build();

	            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {

	                @Override
	                public boolean verify(String arg0, SSLSession arg1) {
	                    return true;
	                }

	                @Override
	                public void verify(String host, SSLSocket ssl)
	                        throws IOException {
	                }

	                @Override
	                public void verify(String host, X509Certificate cert)
	                        throws SSLException {
	                }

	                @Override
	                public void verify(String host, String[] cns,
	                                   String[] subjectAlts) throws SSLException {
	                }

	            });

	            return HttpClients.custom().setSSLSocketFactory(sslsf).build();

	        } catch (GeneralSecurityException e) {
	            throw e;
	        }
	    }

	    public static void main(String[] args) {
	        try {
	            String str= post("https://localhost:443/ssl/test.shtml","name=12&page=34","application/x-www-form-urlencoded", "UTF-8", 10000, 10000);
	            //String str= get("https://localhost:443/ssl/test.shtml?name=12&page=34","GBK");
	            /*Map<String,String> map = new HashMap<String,String>();
	            map.put("name", "111");
	            map.put("page", "222");
	            String str= postForm("https://localhost:443/ssl/test.shtml",map,null, 10000, 10000);*/
	            System.out.println(str);
	        } catch (ConnectTimeoutException e) {
	            e.printStackTrace();
	        } catch (SocketTimeoutException e) {
	            e.printStackTrace();
	        } catch (Exception e) {
	            e.printStackTrace();
	        }
	    }
	

}
